The vast majority of photos are taken on a mobile device these days, so it makes sense to make a bit of an effort to get a better quality picture. There are tons of lens attachments for the iPhone; the one you’re looking at is a “super fisheye” lens that’s a little different than other similar offerings. Instead of the regular 180°, you’re getting 235°. That’s a much wider field of view and can make for some interesting shots. It’s also easy to remove and install so you won’t have a large lens sticking out at all times. Normally you’d have to pay $49, but with this deal it’s only $29.